Business scope of the business license: Licensed projects: construction project construction; special equipment design; special equipment manufacturing; special equipment installation, modification and repair; power generation business, power transmission business, power supply (distribution) business; construction project design; construction project quality inspection; construction project construction (except nuclear power plant construction and operation, civil airport construction); professional construction operations. (For projects that require approval according to the law, business activities can be carried out only after approval by relevant departments. The specific business projects shall be subject to the approval documents or licenses of relevant departments) General projects: manufacturing of special equipment for environmental protection; air pollution control; manufacturing of special equipment for oil refining and chemical production; sales of special equipment for oil refining and chemical production; sales of new catalytic materials and additives; air pollution prevention and control services; solid waste treatment; sludge treatment equipment manufacturing; manufacturing of special equipment for metallurgy; sales of special equipment for metallurgy; research and development of technology for utilization of waste heat, waste pressure and waste gas; heat production and supply; sales of special equipment for environmental protection; technical services, technology development, technical consultation, technical exchange, technology transfer and technology promotion; environmental protection consulting services; engineering and technical research and experimental development; industrial engineering design services; manufacturing of distribution switch control equipment; sales of distribution switch control equipment; electrical installation services; manufacturing of mechanical and electrical equipment; sales of mechanical and electrical equipment; technology promotion services; research and development of high-efficiency energy-saving technologies in the power industry; sales of special equipment; Manufacturing of ovens, furnaces and electric furnaces; sales of ovens, furnaces and electric furnaces; installation services for general machinery and equipment; manufacturing of metal structures; sales of metal structures; manufacturing of pneumatic power machinery and components; sales of pneumatic power machinery and components; manufacturing of industrial automatic control system devices; sales of industrial automatic control system devices; engineering management services; operation of wires and cables; manufacturing of power facilities and equipment; sales of chemical products (excluding licensed chemical products); import and export of goods; import and export of technology; import and export agency; customs declaration business; manufacturing of digital video surveillance systems; sales of digital video surveillance systems; security system monitoring services; sales of special instruments for environmental monitoring; manufacturing of special instruments for environmental monitoring; network and information security software development; research and development of distribution switch control equipment; software sales; software development; industrial Internet data services; safety and technical training for special operations personnel; fire protection technical services; sales of air pollution monitoring and detection instruments; manufacturing of air pollution monitoring and detection instruments; water environment pollution prevention and control services. (Except for projects that must be approved according to law, business activities can be carried out independently in accordance with the law with a business license)